#define _CRT_SECURE_NO_WARNINGS
int  main()
{
	double a = 0;
	double b = 0;
	double sum = 0;
	
	scanf("%lf %lf", &a,&b);
	
	sum =a + b;
	
	printf("sum = %lf\n", sum);
	
	
	
	return 0;


}